Silo

Months later, Juliette is mayor of Silo 18, but she can't remember what she saw outside. Camille Sims, the new head of IT, keeps her on pills that wipe her memory. An anonymous note gets her to quit them. Deep in the Silo she finds Bernard alive and badly scarred, and relics from the past, like George's watch, bring her memories back. Lukas and Patrick Kennedy head to Silo 17 to find the Safeguard pipe. Bernard turns himself in to distract the Algorithm and dies. In the past, Congressman Daniel Keene and journalist Helen Drew learn what the silos are for. In the end, the Algorithm's voice has a face: Victor, in Silo 1.

1. Behind the scenesNew faces in the past

   Ashley Zukerman (Succession) and Jessica Henwick (Game of Thrones) join as Daniel Keene and Helen Drew, the leads of the past storyline.

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2. ReferenceTroy, like the book

   The finale is called Troy, the name Daniel goes by in Silo 1. It's the same name his character gets in Shift, the book this season adapts.

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3. CameoSolo returns in episode 8

   Steve Zahn is gone all season and comes back as Solo in episode 8, Gray Goo, talking to Juliette over the radio.

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